diff --git a/requirements.txt b/requirements.txt
index 7c41a05..166f4d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 certifi==2017.4.17
 chardet==3.0.4
 google-api-python-client==1.6.2
-httplib2==0.10.3
+httplib2==0.18.0
 idna==2.5
 oauth2client==4.1.1
 pyasn1==0.2.3